DEM SIMULATIONS OF DEBRIS FLOW USING MICROSCOPIC FLUID COUPLING SCHEME

Using DEM in Particulate Flow Simulations

Multiphase Debris Flow Simulations with the Discrete Element Method Coupled with a Lattice-boltzmann Fluid

Debris flows are dangerous natural hazards that occur mainly in mountainous terrains after heavy rainfall, responsible for casualties and damages reported yearly worldwide. Their heterogeneous composition, with a viscoplastic fluid and the presence of a relevant granular solid phase, leads to a non-trivial behaviour making them a challenging problem both for the physical description of the phen...

Numerical simulations of a fluid-particle coupling

We present numerical simulations of a model of coupling between a inviscid compressible fluid and a pointwise particle. The particle is seen as a moving interface, through which interface conditions are prescribed. Key points are to impose those conditions at the numerical level, and to deal with the coupling between an ordinary and a partial differential equations.

Coupling Fluid Flow with Porous Media Flow

The transport of substances back and forth between surface water and groundwater is a very serious problem. We study herein the mathematical model of this setting consisting of the Stokes equations in the fluid region coupled with the Darcy equations in the porous medium, coupled across the interface by the Beavers–Joseph–Saffman conditions. We prove existence of weak solutions and give a compl...

The Sonification of Numerical Fluid Flow Simulations

Computational Fluid Dynamics (CFD) software simulates fluid, air flow and heat transfer by solving the Navier-Stokes (N-S) equations numerically. Realistic 3-D engineering simulations typically yield the values of 7 or more variables (e.g. fluid component velocities and temperatures) at hundreds of thousands of points in space, all as a function of time. It has been noted that solutions of the ...